Frederick w



N0. 6I5,850. Patented Dec. l3, I898.

F. W. HEDGELAND. MECHANISM FOR DRIVING MUSIC ROLLS IN SELF PLAYING INSTRUMENTS.

(Application filed Jan. 15, 1898.)

(No Model.)

@H M a l F. MT I E. v n u a E 1 M M G F g H Q W HUI-.." F 3 I uIwm y vi w w W/ G &.R E w E m W N UNITED STATES PATENT OFFICE.

FREDERICK \V. HEDGELAND, OF CHICAGO, ILLINOIS, ASSIGNOR TO THE IV. WV. KIMBALL COMPANY, OF SAME PLACE.

MECHANISM FOR DRIVING MUSIC-ROLLS IN SELF-PLAYING INSTRUMENTS.

SPECIFICATION forming part of Letters Patent No. 615,850, dated December 13, 1898.

Application filed January 15, 1898- Serial No. 666,742. (No model.)

T 00% whom it may concern:

, Be it known that I, FREDERICK W. HEDGE- LAND, a citizen of-the United States, residing in Chicago, in the county of Cook and State of Illinois, have invented a new and useful Improvement in Mechanism for Driving Music- Rolls in Self-Playing Instruments, of which the following is a specification.

This invention relates to the mechanism employed for driving the music-rolls of self-playing instruments, and is an improvement upon the construction of such mechanism shown in my application, Serial No. 663,449, filed December 27, 1897. In my said application I show the wind-motor and the music-sheet-carryin g rolls in combination with mechanism for carrying power from the former to the latter, such mechanism embracingspeed-gov ernin g devices acting to regulate the speed of the music-sheet and being themselves controlled by a stop or similar device.

My principal endeavor in the present invention has been to make the speed governing devices of the former invention capable of being reversed as to the direction of the movement which they impart, so they may be used both for driving the take-up roll during the playing and for driving the music-roll in rewinding Without employing any clutching devices whatever and without making the motor itself reversible.

The nature of the invention, as well as the details of its construction, will be fully understood from the description which I give below, when considered in connection with the accompanying drawings, in which Figure 1 is a plan of the invention; and Fig. 2 is a side elevation, partly in section.

In said drawings, A represents the pulley, which is belted to and driven by the windmotor of the instrument. This wind-motor I have not deemed it necessary to show, as the invention is not dependent upon the character or construction of the motor.

A to a swinging support A pivoted near the pulley at A to a stationary frame A I prefer to unite the pulley and shaft in such manner that the swinging movements of the shaft will have but little elfect upon the pulley, and hence the upper end of the shaft is squared, as shown at A and this squared portion is passed through a plate A attached to the under surface of the pulley and having an opening corresponding in shape to the shaft, the shaft-opening in the pulley above the plate being enlarged, as shown. This construction allows the pulley to maintain its horizontality regardless of the changes in position of the lower end of the shaft, while at the same time it compels the shaft to rotate with the pulley.

A friction-disk E is attached to the lower end of the shaft A and is made slightly concave on its under surface, and this disk engages, accordingto the position in which it is ad j ust-ed,one or the other of the friction wheels F or G. In its neutral or non-acting position the disk E is located, as shown at Fig. 2, with its center positioned directly over the wheels; butif moved to the position shown by broken lines in said figure its outer portion will engage with and operate the wheel G in one direction, as such change of position brings that portion of the disk to bear upon said wheel and at the same time lifts the disk away from the wheel F, so that the latter remains idle. If the disk E is shifted to the other side of its neutral positionthat is, the

position opposite to that given in broken linesit will in like manner engage the wheel F and turn it in a direction the reverse of that imparted to the wheel G and have no elfect on the latter. Thedisk may be shifted more or less in either direction from its cen tral position, according to the speed desired to give the music-sheet, the greater speed being obtained by moving the disk so as to bring its outer portions against the frictionwheel. Ihis is of course unimportant in rewinding; but in playing it is essential and constitutes a main feature of my prior application. The changes in position of the friction-disk may be made at will by the organist or operator through the medium of any suitable devices-such, for instance, as the stoprod E", elbow-lever E and wire E connecting the elbow'lever to the lower end of the swinging support A this feature being the same in construction as that shown in my said application.

The wheels F and G in order that they may be brought close together under the disk are mounted, the wheel F upon the hollow shaft F and the wheel G upon a solid shaft G, passing through the hollow shaft F. A pulley F arranged upon the hollow shaft, is connected by a belt F to the pulley F, which drives the take-up roll, and the shaft G is connected directly to the music-roll. The stop-rod or its equivalent controlling device should have three principal positions, in one of which it will bring the friction-disk E to its central or non-acting position, a second in which it will carry the friction-disk into position to actuate the friction-wheel F and drive the takeup roll, and a third position in which it will carry the friction-disk into engagement with the wheel G and cause the actuation of the music -roll. Then in its neutral position, the friction disk may continue in motion without injury, because at such times there should be no actual contact with the wheels; but even if slight power be exerted upon both wheels at any such time no motion of the wheels would result, because both music-rolls would then draw simultaneously upon the m usic-sheet in opposite directions, and the power applied to one friction-wheel would be neutralized by that applied to the other. The stop-rod should also be capable of positioning the friction-disk'at positions intermediate its neutral or non-actin g position and its greatest power-exertin g position, at least upon the side which actuates the wheel F, so that the speed of the motion imparted to the take-up roll may be varied without changing the speed of the motor and so that the latter may continue in operation at full speed and thus be able to exert its full power when the sheet is moved slow as well as when it is moved fast.

It will be not-iced that my invention renders unnecessary the clutches heretofore used for connecting the music and take'up rolls to the motor, that the motor itself always moves in one direction and at full speed, and consequently needs no regulation of any kind, and

that the valves usually employed for regulating the amount of wind supplied to the windmotor are not necessary.

I claim- 1. The combination with the music and take-up rolls and the motor for actuating the same, of power-transmitting mechanism connecting the rolls with the motor, such mechanism embodying reversible friction devices consisting of the movable friction-disk driven from the motor, and the wheels 1 F and G mounted upon different shafts, substantially as specified.

2. The combination with the music and take-up rolls and the motor for actuating the same, of power-transmitting mechanism connecting the rolls with the motor, such mechanism embodying a reversible friction device consisting of a friction-disk driven by the motor and supported by a swinging shaft, and the friction-wheels F and G mounted upon separate shafts, one ofwhich shafts acts to drive the take-up roll and the other the musicroll, substantially as specified.

3. The combination with the wind-motor and music-rolls of a self-playing instrument, of reversible friction mechanism for carrying power from the motor to the rolls, such mechanism embracing a concave-faced disk E adjustable as to position, and receiving power from the motor, and friction-wheels F and G each connected to one of the music-rolls and alternately engaged by said disk, said disk acting in one position to drive one wheel in one direction, in another position to drive the other wheel in the other direction, and being neutral in a third position, substantially as specified.

4. The combination with the wind-motor and music-rolls of a self-playing instrument, of mechanism carrying the power from the motor to the rolls, said mechanism embracing an adjustable frictiondisk E, two frictionwheels alternately engaged by said disk, and separate shafts for said wheels each connected to one of the music-rolls, substantially as specified.

FREDERICK N. IIEDGELANI). lVitnesses:

EDW. S. EVARTS, II. M. MUNDAY. 

